单例模式

class ccpa(object):
    def __new__(cls, *args, **kwargs):
        # 定义单例初始化方法
        # 判断单例师傅存在 _instance中储存的就是单例
        if not hasattr(cls, '_instance'):
            # 如果没有就初始化单例
            cls._instance = super(ccpa, cls).__new__(cls, *args, **kwargs)
            # 初始化REST SDK
            cls._instance.rest = REST(_serverIP, _serverPort, _softVersion)
            cls._instance.rest.setAccount(_accountSid, _accountToken)
            cls._instance.rest.setAppId(_appId)
        return cls._instance

    def send_sms(self, to, datas, tempId):
        # 再定义发送短信单例方法
        result = self.rest.sendTemplateSMS(to, datas, tempId)
        print(result)
        # 判断结果
        if result.get('statusCode') == '000000':
            return 0  # 成功返回 0
        else:
            return 1